Harrow.



L. E. HANSEN.

HARROW.

APPLlcmoN FILED Aus.3. 1914.

Lf E. HANSEN.

HARROW.

APPLICATION FILED AuG.3,1914.

LLMJQ@ Patented Julie 22, 1915.

2 SHEETS-SHEET 2.

' with these principles.

LEWIS E. HANSEN, OIF BLAIR, NEBRASKA.

HARROW.

Application filed August 3, 1914.

To all whom it may concern Be it known that I, Luwrs E. HANSEN, acitizen of the United States, residing at Blair, in Vashington county,in the State of Nebraska, have invented certain new and usefulImprovements in Harrows andV have described the same in the followingspecification, illustrated by the accompanying drawings.

My invention relates to that class of sulky harrows in which thesoil-stirring teeth, being normally carried in vertical positions, 0r inapproximately vertical positions, by hori- Zontally disposed tooth bars,the same being rockshafts, are occasionally, at the pleasure of therider, tilted backward by the rocking of those bars, so as to slideclear of stalks, pieces of turf, and other obstructions or cloggingimpediments gathered or encountered by the teeth.

It is the main object of the invention to enable the driver to tilt theteeth and control the tooth-carrying rockshafts of a riding harrow ofthis class while occupying the sulky seat; to enable him to do this witha minimum or reduced expenditure of muscular energy; and in general toincrease the efliciency of harrows of the specified class. To accomplishthis object I incorporate in my improved harrow, as parts thereof, apivoted hand lever within reach of the driver, a plurality of rock armsactuating the tooth-carrying rockshafts respectively, and an operativeconnection between the hand lever and the rock arms; and alsocommunicate from the draft mechanism of the harrow to these rockshafts atorsional stress contrary in direction to that which is communicated tothem by the reaction of the teeth drawn through the soil.

The accompanying drawings show the best manner in which I havecontemplated applying the principles of the invention; yet the latter isnot restricted to any specific arrangement or construction of parts,excepting as limitations of that kind are either eX- pressed ornecessarily implied in the subjoined claims.

In these drawings Figure 1 is a plan of a harrow which is constructed inaccordance Fig. 2 is a perspective view of a portion of the same harrow.Fig. 3 is a perspective view of a corresponding portion of the harrow ina modified form. Figs. f1, 5 and 6 are enlarged details in perspective.

Specicaton of Letters Patent.

Patented J une 22, 1915. Serial No. 854,613.

That specimen of my invention which is shown in Figs. 1, 2, 4: and 5, isa riding harrow having four sections, or duplicate toothed frames, 1, 2,3 and t, disposed side by side in a well-known manner. Each of thesesections comprises a plurality of rockshafts 5, journaled in thehorizontal bars 6, and carrying a multiplicity of spaced teeth 7, whichstand out in a radial or approximately radial direction from theseshafts. The duplicate alining transverse bars 8, being preferablytubular, and forming part of the draft mechanism of the harrow, areconnected by the draft chains 9 with the said bars 6 of the right andleft pairs of said harrow sections respectively; and by the bifurcatedtongue 10 are connected with and spaced from the trailing sulky 12,having the drivers seat 11. This tongue and the sulky have a pivotal oriifth-wheel connection, comprising the vertical sleeve 24C, which isrigidly attached to the tongue, and the round core 25, which is anupturned portion of the sulky tongue 26, and works rotarily in thesleeve. To this sleeve is secured the leg 27 of the seat 11. 0n theupper end of the core 25 is fastened a retaining collar 28, and aforwardly directed radial arm 29, which has a sliding engagement withthe bent detaining bar 4:3 spanning the arms of the tongue 10. To enablethe driver to operate and control the tooth-carrying rockshafts 5, thehand-lever 13 is pivotally mounted on thesleeve 24, the latch 14 iscarried by this hand-lever, the notched sector l5 is mounted on the samesleeve within reach of this latch in the various positions of adjustmentof the hand-lever, this lever is connected by the pushrod 16 with therockarm 17 on the front draft bar 18, this draft bar is provided with arockarm 19 for each harrow section, this rockarm is connected by thepushrod 20 with one of the several rockarms 21 of the rockshafts 5, andthese rockarms of each harrow section are connected to move in unison bya link 22.

The chains 30 by which the harrow is drawn, are attached to theunderside of the draft bar 18, or wound thereon, in such a manner asoperatively to communicate thereto a force tending to turn that barrotarily in the direction indicated by the arrow 31. Likewise the draftchains 23 by which the bars 8 and 18 are connected in parallelpositions, are attached to the upper side of the bar 18, or are partlywound thereon, in such a manner as operatively to communicate to i areso proportioned as normallyto hold' the teeth in the vertical positionsshown.y In this position of approximate equilibrium the teeth of eachsection arefnormally secured by the latched hand lever 13, actingthrough the pushrod 16, the rockarm 17, the draft bar 18, the radial arm19, the pushrod 20,

the rookshafts 5 and the radial arms 21, the` latter beingfastenedtogether by the link 22 so as to move in unison. From thispositiony the teeth are easily tilted back, clear of impediments andobstructions, as often as maybe necessary, by mere manipulation of thelatched hand lever.

As shown in Fig. 4, the rockarm 17 is of adjustable operative length byreason of the plurality of pinholes 32, which alternatively accommodatethe pin 33 pivoting that arm tothe pushrod 16. The same arm has laterminal two-part screw-clamp 34, encircling the draft bar 18 andangularly adjustable thereon by the setscrew 35. As shown in Fig. 5,-which is a perspective view of one of the chains 23 and its connections,that'chain is detachably connected with the draft bar 8 by the hook-bolt36, and is adjustably connected with the draft bar 18 by the collar 37,which is provided with a setscrew 38 and with a radially projectingeyepiece 39 engaging thel chain. This collar is rotarily ad` justablebetween a pair of retaining collars 40, which are likewise provided withsetscrews 41, and are integrally united by the bridge .42 yagainst whichthe chain may pull.

In the modification shown in Fig.' 3, the two alining draft bars'8,being movable rotarily inthe collars 44 attached t0 the-tongue 10, arerespectively connected by the radial arms 17 and the pushrods 16 withthe two separate levers 13,' mountedon the lsleeve 24y as described; arerespectivelyconnected byY the radial arm 19 and the pushrods 20 with thelinked'radial arms 21; and' are connected by` the chain 23 with thedraft bar 18 Vin such a manner as to receive therefrom a force tendingto turn them rotarily in the direction indicated by the arrows 31.

I claim asfmy'invention- 1. A harrow of the specified class, comprisinga. plurality of rockshafts having teeth, a rocking draft bar having alink and lever connection with the rockshafts, and a pivoted hand vleverhaving a like connection with the draft bar. Y

2. A harrow of the specified class, comprising a plurality ofsoil-stirring teeth, a plurality oftransverse'rockshafts carrying theteeth, a transverse draft bar movable rotarily, a pivoted hand leverwithin reach-of the rider, and link and lever connections be-VV tweenthedraft-bar and the rockshafts and between the draft bar and the handlever respectively.

3. A harrowof the specified class, comprising horizontally disposedbars, a plurality of transverse tooth-carrying rockshafts journaled inthe bars, a rocking transverse draft bar, fiexibly connected with thehorizontal bars, a link and lever connection between the draftV bar andthe rockshafts, a pivoted hand lever behind the draft bar, and

a link and lever connection between the` In testimony whereof 'Isubscribe my Vsig-` naturehereto in the presence of two witnesses. j j

A Lewis E.' HANSEN.

Wtnessesf LoU. VAU'GHAN,

E. A. PALMER;

Copielot this patent may` be obtained forfve cents eaehgrbyfaddressingthe Commissioner of'Patents, Wallington; D. C.

